package com.zw.cc.base;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.core.env.Environment;

import java.util.Map;

/**
 * Created by zwz
 * date 2016/12/27
 * project com.zw.cc.base
 */
public class SpringContextUtils {

    private static ApplicationContext applicationContext;

    private static Environment env;

    public static void setApplicationContext(ApplicationContext arg0)
            throws BeansException {
        applicationContext = arg0;
        env = applicationContext.getBean(Environment.class);
    }



    /**
     * 获取applicationContext对象
     *
     * @return
     */
    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    /**
     * 根据bean的id来查找对象
     *
     * @param id
     * @return
     */
    public static Object getBeanById(String id) {
        return applicationContext.getBean(id);
    }

    /**
     * 根据bean的class来查找对象
     *
     * @param c
     * @return
     */
    public static Object getBeanByClass(Class c) {
        return applicationContext.getBean(c);
    }

    /**
     * 根据bean的class来查找所有的对象(包括子类)
     *
     * @param c
     * @return
     */
    public static Map getBeansByClass(Class c) {
        return applicationContext.getBeansOfType(c);
    }

    /**
     * 根据Key 获取Property文件中的value
     * @param key
     * @return
     */
    public static String getProperty(String key) {
        return env.getProperty(key);
    }

}
